From OpenStreetMap Wiki
|railway = milestone|
|A stone or metal marker along a railway denoting the distance traveled.|
|Used on these elements|
|Status: In use|
|Tools for this tag|
|This tag page is a stub. You can help OpenStreetMap by expanding it.
Similar pages for structural reference: Tag:railway=tram, Tag:waterway=dock.
Used for a distance marker along a railway. Use distance=* to record the distance on the marker. Default distance is kilometres.
for "modern" milestones look at
- highway=milestone - Proposed_features/Milestones
- railway:position=* look at OpenRailwayMap/Tagging
for "historic" milestones look at